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Author Topic: What is it...?  (Read 141 times)

yoyospin

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What is it...?
« on: January 30, 2018, 06:35:00 PM »

I've had this idea in the back of my head for the last year or so...melding a finger top and fidget spinner into one, a world's first as far as I know. Click on the link below to see a YouTube video of this machine in action.





« Last Edit: January 30, 2018, 06:42:55 PM by yoyospin »
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Jeremy McCreary

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Re: What is it...?
« Reply #1 on: January 31, 2018, 06:16:57 PM »

Nice design and action, Ed! And of course, beautifully made.

Q: Does your metal rotor freewheel in both directions?

Last May, I fell into some LEGO top + fidget spinner combos while fooling around with fidget spinner designs. Two examples below from 4:46 on...



Think I recall seeing at least one other "fidget top" on YouTube.
« Last Edit: January 31, 2018, 06:20:39 PM by Jeremy McCreary »
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Playing with the physical world through LEGO

yoyospin

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Re: What is it...?
« Reply #2 on: January 31, 2018, 08:06:27 PM »

Yes, the fidget spinner rotor spins freely in either direction. However, the fidget spinner rotor and the wood spintop part need to all turn in the same direction to maintain stability.

Here's experimental fidget spinner - spin top meld # 2, fresh off the lathe:
« Last Edit: January 31, 2018, 08:10:30 PM by yoyospin »
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Jeremy McCreary

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Re: What is it...?
« Reply #3 on: January 31, 2018, 08:29:15 PM »

... the fidget spinner rotor and the wood spintop part need to all turn in the same direction to maintain stability.

Makes sense -- in retrospect. Discovering little gotchas like that and finding ways around them is all part of the fun in the top-making biz!

Here's experimental fidget spinner - spin top meld # 2, fresh off the lathe...

I really like that one!
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ta0

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Re: What is it...?
« Reply #4 on: February 08, 2018, 12:27:12 AM »

Although there have been many designs using a flywheel with a ball bearing between the axle and the flywheel (for example, a fidget spinner with a pencil through the center), I don't recall one in which the axle opens up into a "skirt", simulating a finger top. The reason might be because the axle flaring would become dead weight, unless it's independently spun, like on the video.

Have you tried the rolling method (like a wheel on the ground) of starting the top?
« Last Edit: February 08, 2018, 12:39:23 AM by ta0 »
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